Thematische Bibliographien / Light gas gun

Inhaltsverzeichnis

  1. Zeitschriftenartikel
  2. Dissertationen
  3. Bücher
  4. Buchteile
  5. Konferenzberichte
  6. Berichte der Organisationen

Auswahl der wissenschaftlichen Literatur zum Thema „Light gas gun“

Autor: Grafiati
Veröffentlicht am 24. Juni 2021
Zuletzt aktualisiert am 9. Februar 2022

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Zeitschriftenartikel zum Thema "Light gas gun"

1

Tidman, D. A., und D. W. Massey. „Electrothermal light gas gun“. IEEE Transactions on Magnetics 29, Nr. 1 (Januar 1993): 621–24. http://dx.doi.org/10.1109/20.195647.

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Wang, Bai Qiu, Cong Wang, Hai Long Huang, Yan Jiang Xing und Jia Zhong Zhang. „Analysis of Underwater Projectile Experiment Using One Stage Light Gas Gun and Numerical Simulation“. Applied Mechanics and Materials 226-228 (November 2012): 776–79. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.776.

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One stage light gas gun is an important device for experiments of low-speed supercavitation projectiles. After a reasonable simplification to the gas gun, movements of the projectile in the barrel have been analyzed and the relationships between the initial pressure of the gas gun and the exit velocity of the projectile were obtained. For meeting the velocity difference between at the gun exit and water-entry, a speed impairment factor was employed. The results of the adiabatic analysis of the simplified gun show that the best ratio between gun chamber volume and the barrel length is related to the gas thermodynamic process and the gas residual pressure has relation to the gas thermodynamic process. The low-speed supercavitation projectile experiments have been carried out. The movements of the projectile in the gas gun and the supercavitation shape and projectile speed after water-entry have been numerically simulated.
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Linhart, J. G., und F. Cattani. „Theory of a multistage light gas gun“. Acta Astronautica 61, Nr. 7-8 (Oktober 2007): 617–25. http://dx.doi.org/10.1016/j.actaastro.2006.12.008.

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4

Liu, Yang, Xiao Dong Song, Xiao Xian Yao und Kun Li. „Dynamic Simulation and Experimental Research of High Pressure Pneumatic Valve in Gas-Driven Light Gas Gun“. Applied Mechanics and Materials 365-366 (August 2013): 289–93. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.289.

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Use gas-driven light gas gun is one of the techniques extensively used to achieve hypervelocity projectiles. The device was made up of a compressed gas gun as the first-stage drive. A new type high pressure pneumatic injecting system of gas-driven light gas gun for hypervelocity launching is introduced. As a critical component of the injecting system, the high pressure pneumatic valve was designed. Functions of the pneumatic valve were preserved and relevant techniques were discussed. Besides, a high pressure pneumatic mass flow control test-bed using inert medium was built in order to study the dynamic response characteristic of high pressure pneumatic valve in gas-driven light gas gun. To ascertain the response delay time of the valve, several turn-on and turn-off experimental tests of the valve were initiated. The results suggest that: the pressure of pneumatic electromagnetic valve gas supply circuit seriously influenced the properties of high pressure pneumatic valve; the mean delay time of the high pressure pneumatic valve was 190ms approximately at 6.5MPa gas pressure of the pneumatic electromagnetic valve gas supply circuit.
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AKAHOSHI, Yasuhiro, Yousuke SATO und Takushi KAJITANI. „Effectiveness of Mixed Gas in Two-Stage Light Gas Gun“. Proceedings of Conference of Kyushu Branch 2002.55 (2002): 41–42. http://dx.doi.org/10.1299/jsmekyushu.2002.55.41.

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Lamberson, L. E., und P. A. Boettcher. „Compressed gas combined single- and two-stage light-gas gun“. Review of Scientific Instruments 89, Nr. 2 (Februar 2018): 023903. http://dx.doi.org/10.1063/1.5000912.

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TSUTSUMI, Toshiaki, Katsuhiro OKUMURA, Nobuyoshi MATSUSHITA und Yasuhiro AKAHOSHI. „208 Improvement of Two-Stage Light Gas Gun“. Proceedings of Conference of Kyushu Branch 2000.53 (2000): 31–32. http://dx.doi.org/10.1299/jsmekyushu.2000.53.31.

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Laabs, Gary W., David J. Funk und Blaine W. Asay. „Novel light gas gun with minimal timing jitter“. Review of Scientific Instruments 67, Nr. 1 (Januar 1996): 195–97. http://dx.doi.org/10.1063/1.1146570.

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Sorrell, F. Y., und M. D. Smith. „Dynamic structural loading using a light gas gun“. Experimental Mechanics 31, Nr. 2 (Juni 1991): 157–62. http://dx.doi.org/10.1007/bf02327569.

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OKUMURA, Katsuhiro, Yasuhiro AKAHOSHI, Toshiaki TSUTSUMI und Nobuyoshi MATSUSHITA. „209 Development of Desktop Two-Stage Light Gas Gun“. Proceedings of Conference of Kyushu Branch 2000.53 (2000): 33–34. http://dx.doi.org/10.1299/jsmekyushu.2000.53.33.

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Dissertationen zum Thema "Light gas gun"

1

Kim, Hyundae. „Study of a light-gas gun for launching active transient internal probes /“. Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/9997.

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Landemoo, Viktor. „Lättgaskanonens innerballistik : Teori, simulering och parameterstudie“. Thesis, KTH, Maskinkonstruktion (Avd.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297861.

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En lättgaskanon är en typ av kanon som används vid experiment där mycket snabba förlopp är av intresse, till exempel hypersonisk strömning och höghastighetskollisioner. Kanontypen når betydligt högre hastigheter än en konventionell kanon då projektilen accelereras genom eldröret av en gas med låg molekylmassa som vätgas eller helium istället för krutgaser. Denna lättgas komprimeras först till högt tryck och temperatur i pumptuben av en kolv som accelererats av en krutladdning. Pumptuben är ett rör anslutet till eldröret som initialt är frånskild av ett membran. För kanonen kan en mängd olika parametrar varieras och hur dessa ska väljas för att en viss mynningshastighet ska nås är inte självklart. Vid FOI har val av parametrar historiskt gjorts baserat på erfarenhet och genom experiment vilket kan vara tidsödslande. Syftet med examensarbetet var därför att simulera kanonen och undersöka hur olika parametrar påverkar dess prestanda. Forskningsfrågor som skulle besvaras var hur olika parametrar påverkar projektilens mynningshastighet och vilket utav två eldrörsalternativ som är bäst lämpat för en viss projektilvikt. Det innerballistiska förloppet i kanonen har simulerats för olika parameterkombinationer med ett program utvecklat specifikt för lättgaskanoner vid NASA:s Ames Research Center och modellen har i viss mån kunnat jämföras mot experimentell data. Resultatet av simuleringarna är att mängden lättgas och krut båda har stor inverkan på mynningshastigheten och att högre kolvvikt jämnar ut trycktoppar som uppstår till följd av stötar i gasen. Att ändra membranets öppningstryck ger ingen förbättring av kanonprestandan för den undersökta projektilvikten och utav de två eldrören som undersökts är det med större kaliber mer lämpligt för de aktuella experimenten.
A light gas gun is a type of gun which is used for experiments when high velocity phenomena are of interest, such as hypersonic flow and high-velocity impacts. The gun type can reach much higher velocities than a conventional gun as the projectile is accelerated down the barrel by a gas with low molecular mass such as hydrogen or helium instead of combustion gasses. This light gas is first compressed to high pressure and temperature in the pump tube with a piston which is accelerated with a propellant charge. The pump tube is connected to the barrel but initially separated from it with a membrane. A vast array of parameters can be varied on the gun in order to achieve a target muzzle velocity and their selection is not trivial. Historically parameters have been selected at FOI through experience and experiments which can be tedious. The purpose of this thesis was to simulate the gun and investigate how various parameters influence its performance. The research questions to be answered was how the parameters influence the muzzle velocity of the projectile and which of two barrels is the most suitable for a given projectile weight. The internal ballistics of the gun was simulated for various combinations of parameters using a program specifically developed for light gas guns at NASA's Ames Research Center and the model has to some extent been compared to experimental data. The result of the simulations shows that the amount of light gas and the propellant charge have a significant effect of the achieved velocity and that the weight of the piston has a reducing effect on the pressure peaks caused by shockwaves in the gas. Changing the opening pressure of the membrane does not improve gun performance for the investigated projectile weight and of the two barrels investigated the one with larger calibre is better suited for the experiments of interest.
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Guan, Nan. „Nitride nanowire light-emitting diode“. Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS372/document.

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Les nanofils nitrures présentent des propriétés optoélectroniques extraordinaires et sont considérés comme des matériaux prometteurs pour des diodes électroluminescentes (LEDs), grâce à leur haute qualité cristalline, leurs surfaces non-polaires, leur bonne flexibilité mécanique, leur rapport d’aspect élevé, etc.Cette thèse adresse la croissance, la fabrication, les caractérisations optiques et électriques et la simulation optique des dispositifs à base de nanofils nitrures, avec un accent particulier sur les LEDs à nanofils.Premièrement, cette thèse présente la croissance par épitaxie en phase vapeur aux organométalliques de nanofils nitrures cœur-coquille auto-assemblés contenant des puits quantiques InGaN/GaN sur les facettes plan m avec différentes concentrations d’In. Puis est décrite la fabrication de LEDs utilisant ces nanofils suivant deux différentes stratégies d’intégration (intégrations planaires et verticales).L’intégration planaire est basée sur des nanofils uniques dispersés horizontalement. J’ai proposé une plateforme photonique intégrée composée d’une LED à nanofil, d’un guide d’onde optimisé et d’un photodétecteur à nanofil. J’ai également développé un système d’alignement des nanofils.L’intégration verticale a pour objectif la réalisation de LEDs flexibles reposant sur une assemblée de nanofils verticaux encapsulées dans des polymères. Je montre que ceci permet la fabrication de LEDs flexibles monochromatiques, bi-couleurs ou blanches.Les nanofils épitaxiés sur des matériaux 2D par épitaxie de van de Waals sont faciles à décoller de leur substrat natif. Avec cette motivation, dans la dernière partie de cette thèse, j’ai étudié la croissance organisée des nanofils GaN sur du graphène micro et nano-structuré utilisant l’épitaxie par jets moléculaires
Nitride nanowires exhibit outstanding opto-electronic and mechanical properties and are considered as promising materials for light-emitting diodes (LEDs), thanks to their high crystalline quality, non-polar facets, good mechanical flexibility, high aspect ratio, etc.This Ph.D. thesis addresses the growth, the device fabrication, the optical and electrical characterizations and the optical simulations of III-nitride NW devices, with a special emphasis on the LED applications.First, this thesis presents the growth of m-plane InGaN/GaN quantum wells with different In concentrations in self-assembled core-shell nanowires by metal-organic chemical vapor deposition. Then, by using these nanowires, LED devices based on two different integration strategies (namely, in-plane and vertical integration) are demonstrated.The in-plane integration is based on the horizontally dispersed single nanowires. I have proposed a basic integrated photonic platform consisting of a nanowire LED, an optimized waveguide and a nanowire photodetector. I have also developed a nanowire alignment system using dielectrophoresis.The vertical integration targets the fabrication of flexible LEDs based on vertical nanowire arrays embedded in polymer membranes. Flexible monochromatic, bi-color, white LEDs have been demonstrated. Their thermal properties have been analyzed.The nanowires grown on 2D materials by van der Waals epitaxy are easy to be lifted-off from their native substrate, which should facilitate the fabrication of flexible nanowire devices. With this motivation, in the last part of this thesis, I have investigated the selective area growth of GaN NWs on micro- and nano- scale graphene by molecular beam epitaxy
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Sharma, Nikhil. „Characterisation of InGaN/GaN light emitting diodes“. Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621315.

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Feng, Jian. „Power improvement of the InGaN/GaN LED /“. View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202005%20FENG.

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Li, Zonglin, und 李宗林. „Reliability study of InGaN/GaN light-emitting diode“. Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43224155.

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Li, Zonglin. „Reliability study of InGaN/GaN light-emitting diode“. Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43224155.

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Girgel, Ionut. „Development of InGaN/GaN core-shell light emitters“. Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720648.

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Gallium nitride (GaN) and its related semiconductor alloys are attracting tremendous interest for their wide range of applications in blue and green LEDs, diode lasers, high-temperature and high-power electronics. Nanomaterials such as InGaN/GaN core-shell three-dimensional nanostructures are seen as a breakthrough technology for future solid-state lighting and nano-electronics devices. In a core-shell LED, the active semiconductor layers grown around a GaN core enable control over a wide range of wavelengths and applications. In this thesis the capability for the heteroepitaxial growth of a proof-of-principle core-shell LED is advanced. A design that can be applied at the wafer scale using metalorganic vapor phase epitaxy (MOVPE) crystal growth on highly uniform GaN nanorod (NR) structures is proposed. This project demonstrates understanding over the growth constraints of active layers and dopant layers. The impact of reactor pressure and temperature on the morphology and on the incorporated InN mole fraction was studied for thick InGaN shells on the different GaN crystal facets. Mg doping and effectiveness of the p-n junction for a core-shell structure was studied by extensive growth experiments and characterization. Sapphire and Si substrates were used, and at all the stages of growth and fabrication. The structures were optimized to achieve geometry homogeneity, high-aspect-ratio, incorporation homogeneity for InN and Mg dopant. The three-dimensional nature of NRs and their light emission provided ample challenges which required adaptation of characterization and fabrication techniques for a core-shell device. Finally, an electrically contacted core-shell LED is demonstrated and characterized. Achieving a proof-of-principle core-shell device could be the starting point in the development of nanostructure-based devices and new physics, or in solving technical problems in planar LEDs, such as the polarization of emitted light, the quantum-confined Stark effect, efficiency droop, or the green gap.
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Melo, Santos João Miguel. „Hybrid GaN-based optoelectronics for visible light communications“. Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27924.

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Development of light-emitting diode technology is driven mainly by the need for efficient solid-state lighting, but it is also creating opportunities for new applications such as visible light communications (VLC). Here, the solid-state visible light sources are used to transmit data with the added requirement of a short excited-state lifetime so that sources can be modulated at high speed. This research focuses on hybrid optical sources for visible light communications with an emphasis on novel formats of colour-converters for multi-wavelength photoluminescence as well as white-light generation. Such converters include red and green colloidal quantum dots, the organic semiconductor BBEHPV andII-VI / III-V epitaxial structures. Solution-processable and environmentally stable polymeric films based on red and green colloidal quantum dots are demonstrated. Modulation bandwidth up to 24 MHz, photoluminescence quantum yields up to 61% and peak emission tunability across the visible spectrum makes these materials interesting as colour-converters for VLC. Free-space data transmission was demonstrated in this case with data rates up to 400 Mbit/s and 500 Mbit/s using 2-PAM modulation scheme for green and red quantum dots, respectively. Hybrid sources consisting of 450nm InGaN LEDs with capillary-bonded micron-thick ZnCdSe/ZnCdMgSe multi-quantum-well colour-converting membranes with peak emission at 540 nm are reported. After processing, the membrane was capillary bonded onto the sapphire side of the μLED resulting in a maximum converted average power of 37 μW. The -3dB optical modulation bandwidth of the bare LED, hybrid device and II-VI were 79 MHz, 51 MHz and 145 MHz, respectively. Visible light communication using both InGaN LEDs and a InGaN laser diode, down-converted by a red-emitting AlInGaP multi-quantum-well nanomembrane are also reported. Similarly to the previous devices, the AlInGaP nanomembrane was bonded onto the μLED array. For the down-converted laser diode approach, the nanomembrane can be sandwiched between a sapphire lens and optionally onto a distributed feedback reflector. The down-converter structure is remotely excited by the laser diode. Data transmission up to 870 Mb/s using M-PAM andOFDM modulation schemes is demonstrated for the μLED integrated nanomembrane. ODFM transmission at 1.2Gb/s is achieved for the laser diode pumped sample.
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Malinauskas, Tadas. „Investigation of carrier dynamics in wide bandgap semiconductors by light-induced transient grating technique“. Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20091215_091652-19632.

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III-nitrides, diamonds are extremely promising wide band gap semiconductor materials for optoelectronics and high temperature, high power electronics. Therefore, there is huge scientific interest in investigation electrical and optical properties of these materials. The light induced transient grating technique (LITG) is very suitable for exploration of carrier dynamics which governed by fundamental and defect related properties of materials. The main goals of the thesis were gain a new knowledge on carrier dynamics in wide bandgap semiconductors (namely GaN, InGaN, and diamonds) by using and developing light induced transient grating technique. The experimental studies on numerous samples, grown at different conditions, combined with extensive measurements in a wide range of carrier densities (1016-1020 cm-3) and temperature (9-300K) was targeted to identify the interplay of radiative an nonradiative recombination mechanisms, to determine carrier lifetime dependence on the excess carrier density, to explain the carrier diffusion coefficient dependence on excitation intensity, to find the optimal materials growth conditions. A novel heterodyne detection scheme for LITG technique was presented. The heterodyning was achieved by coherently mixing the picosecond pulses of diffracted and scattered light. A phase difference between theses fields was controlled by moving holographic beam splitter (HBS) along its grating vector. LITG signal decay kinetics, recorded at two HBS... [to full text]
III grupės nitridai bei deimantai tai platų draustinės energijos tarpą turintys puslaidininkiai, pasižymintys unikaliomis medžiagos savybėmis ir turintys didelį potencialą aukštų temperatūrų, didelių galių, opto/elektroniniams taikymams. Todėl šių medžiagų elektrinės bei optinės savybės pastaruoju metu yra intensyviai tiriamos. Šviesa indukuotų dinaminių gardelių (ŠIDG) metodas labai tinka tyrinėti krūvininkų dinamiką, kuri yra nulemta fundamentinių bei defektinių medžiagos savybių. Pagrindiniai darbo tikslai buvo gauti naujų žinių apie krūvininkų dinamiką plačiatarpiuose puslaidininkiuose (GaN, InGaN bei deimantuose) naudojat bei plėtojant šviesa indukuotų gardelių metodiką. Ištirti didelio nepusiausvirųjų krūvininkų tankio rekombinacijos ir difuzijos ypatumus skirtingo defektiškumo GaN, InGaN sluoksniuose bei sintetiniuose deimantuose. Skaitmeniškai modeliuojant krūvininkų dinamiką nustatyti dominuojančius krūvininkų rekombinacijos mechanizmus bei krūvininkų gyvavimo trukmes, difuzijos koeficientus ir nuotolius. Darbe pristatoma nauja ŠIDG eksperimento schema su holografiniu pluoštelio dalikliu, leidžianti supaprastinti eksperimentą. Ši schema taip pat įgalino heterodininį difrakcijos signalo detektavimą. Parodoma, kad fazės skirtumas tarp signalo ir foninės šviesos gali būti kontroliuojamas keičiant holografinio daliklio padėtį išilgai jo gardelės vektoriaus krypties. Ištyrus didelį kiekį GaN sluoksnių, užaugintų skirtingomis technologijomis bei pasižyminčiu skirtingu... [toliau žr. visą tekstą]
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Bücher zum Thema "Light gas gun"

1

Nappert, L. Circular waveguide couplers for the DREV two-stage light-gas gun. Valcartier, Quebec: Defence Research Establishment, 1993.

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Gottlieb, J. J. Numerical model for prediction of two-stage light-gas gun performance. [S.l.]: [s.n.], 1989.

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Lesage, Francois. Optimization of light-gas gun operation using a numerical simulation code. Valcartier, Quebec: Defence Research Establishment Valcartier, 1990.

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Patin, R. M. A one-dimensional simulation model for a two stage light gas gun with deformable piston. New York: AIAA, 1986.

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Nappert, L. A numerical model for the prediction of two-stage light-gas gun performance: theory and validation. Valcartier, Quebec: Department of National Defence, Defence Research Establishment, 1990.

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Groth, Clinton P. T. Ideal-viscoplastic extrusion model with application to deforming pistons in light-gas guns. [Downsview, Ont.]: Institute for Aerospace Studies, 1987.

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Groth, Clinton P. T. Numerical study of two-stage light-gas hypervelocity projectile launchers. [Downsview, Ont.]: Institute for Aerospace Studies, 1988.

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Nakamura, Shuji. The blue laser diode: GaN based light emitters and lasers. Berlin: Springer, 1997.

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Liyun, Hu, Hrsg. Kai fang xi tong liang zi tui xiang gan de jiu chan tai biao xiang lun. Shanghai Shi: Shanghai jiao tong da xue chu ban she, 2010.

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Liyun, Hu, Hrsg. Kai fang xi tong liang zi tui xiang gan de jiu chan tai biao xiang lun. Shanghai Shi: Shanghai jiao tong da xue chu ban she, 2010.

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Buchteile zum Thema "Light gas gun"

1

Zaretsky, Eugene B. „Light Gas Gun“. In Hypervelocity Launchers, 3–19. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26018-1_1.

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Gathers, G. R., und A. C. Mitchell. „Hugoniot Measurements in Aluminum to 420 GPa Using the LLNL Two-Stage Light-Gas Gun“. In Shock Waves in Condensed Matter, 151–55. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2207-8_17.

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Jiang, Fengyi, Jianli Zhang, Qian Sun und Zhijue Quan. „GaN LEDs on Si Substrate“. In Light-Emitting Diodes, 133–70. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-99211-2_4.

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Xu, Ke, Miao Wang, Taofei Zhou und Jianfeng Wang. „Homoepitaxy of GaN Light-Emitting Diodes“. In Light-Emitting Diodes, 93–132. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-99211-2_3.

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Ha, J. S. „GaN and ZnO Light Emitters“. In Oxide and Nitride Semiconductors, 415–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88847-5_9.

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Einfeldt, S., S. Figge, T. BÖttcher und D. Hommel. „GaN-Based Laser Diodes“. In UV Solid-State Light Emitters and Detectors, 31–39. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2103-9_3.

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Zhang, Rong, und Xiangqian Xiu. „GaN Substrate Material for III–V Semiconductor Epitaxy Growth“. In Light-Emitting Diodes, 1–39. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-99211-2_1.

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Scheibenzuber, Wolfgang G. „Light Propagation and Amplification in Laser Diodes from Violet to Green“. In GaN-Based Laser Diodes, 29–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24538-1_4.

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Yablonskii, G. P., A. L. Gurskii, E. V. Lutsenko, V. Z. Zubialevich, V. N. Pavlovskii, A. S. Anufryk, Y. Dikme et al. „Optically Pumped UV-Blue Lasers Based on InGaN/GaN/Al2O3 and InGaN/GaN/Si Heterostructures“. In UV Solid-State Light Emitters and Detectors, 297–303. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2103-9_26.

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Piprek, Joachim. „Simulation of GaN-based Light-Emitting Devices“. In Simulation of Semiconductor Processes and Devices 2004, 101–8. Vienna: Springer Vienna, 2004. http://dx.doi.org/10.1007/978-3-7091-0624-2_25.

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Konferenzberichte zum Thema "Light gas gun"

1

Ponyavin, Valery, Yitung Chen, Darrell W. Pepper und Hsuan-Tsung Hsieh. „Numerical Modeling of Unsteady Gas Flow Around the Projectile in the Light Gas Gun“. In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59640.

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In this study, an attempt to calculate the characteristics of gas flow around a projectile during the motion of the projectile in the Joint Actinide Shock Physics Experimental Research (JASPER) light-gas gun is undertaken. The flow is considered as axisymmetric, nonstationary, nonisothermal, compressible, and turbulent. For calculating the flow around the projectile, the finite volume method was employed. A comparison between two launch tube exit geometries was made. The first case was standard muzzle geometry, where the wall of the bore and the outer surface of the launch tube form a 90 degree angle. The second case included a 26.6 degree bevel transition from the wall of the bore to the outer surface of the launch tube. The results of the calculations are represented in figures depicting the flow at different moments of time. The figures show the fields of velocity, pressure and density, as well as the appearance of shock waves inside the geometry. Some comparisons with calculations of the same problem but using finite-element method were made. The obtained results can be further used for optimization JASPER geometry. The results also can be used for calculating the gun barrels for the strength and the oscillatory stability. In our future study we will couple structural analysis of the gun barrel material with the gas dynamic calculation of motion of the projectile in the gun barrel with the use of advanced computational methods.
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2

Glenn, Lewis A. „Optimization studies of a three-stage light gas gun“. In The tenth American Physical Society topical conference on shock compression of condensed matter. AIP, 1998. http://dx.doi.org/10.1063/1.55684.

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3

Graves, Timothy, Brian Hardy, Randall Williams, Shannon McCall und Matthew Eby. „Light Gas Gun Impact Testing for the NASA Space Shuttle“. In 26th AIAA Applied Aerodynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-6915.

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4

Sekine, T., S. Tashiro, T. Kobayashi und T. Matsumura. „The NIRIM two-stage light-gas gun: Performance test results“. In Proceedings of the conference of the American Physical Society topical group on shock compression of condensed matter. AIP, 1996. http://dx.doi.org/10.1063/1.50697.

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5

Fujita, K., S. Nomura, S. Matsuyama und H. Tanno. „Measurement of Real-Gas Aerodynamics for Martian Atmospheric Entry Using a Light-Gas Gun“. In Proceedings of the 32nd International Symposium on Shock Waves (ISSW32 2019). Singapore: Research Publishing Services, 2019. http://dx.doi.org/10.3850/978-981-11-2730-4_0495-cd.

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6

HAYAMI, RICHARD. „The application of instrumented light gas gun facilities for hypervelocity aerophysics research“. In 17th Aerospace Ground Testing Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-3998.

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7

Kondo, K. „Performance of the three-stage light-gas gun with a preheating stage“. In Shock compression of condensed matter. AIP, 2000. http://dx.doi.org/10.1063/1.1303671.

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Schonberg, William, und David Cooper. „Repeatability and uncertainty analyses of NASA/MSFC light gas gun test data“. In Space Programs and Technologies Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-4236.

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9

Bogdanoff, D., und R. Miller. „Optimization study of the Ames 1.5 inch two-stage light gas gun“. In 34th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-99.

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10

Bauer, François. „PVDF Gauge Piezoelectric Response under Two-Stage Light Gas Gun Impact Loading“. In Shock Compression of Condensed Matter - 2001: 12th APS Topical Conference. AIP, 2002. http://dx.doi.org/10.1063/1.1483741.

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Berichte der Organisationen zum Thema "Light gas gun"

1

Kruczynski, D., D. Massey, R. Milligan, E. Vigil, B. Landers und M. Meneguzzi. Combustion Light Gas Gun Technology Demonstration. Fort Belvoir, VA: Defense Technical Information Center, Januar 2007. http://dx.doi.org/10.21236/ada462130.

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2

Barnes, Paul Marshall, William D. Reinhart und Christopher T. Seagle. Single Stage Light Gas Gun Control System. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1494631.

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3

Dobie, D. W. ACRV instrumentation plan for NMD HTK light gas gun tests. Office of Scientific and Technical Information (OSTI), April 1999. http://dx.doi.org/10.2172/10790.

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4

Chiasson, Justin, Matthew Hohenshutz, Jason Picone und Daniel Underwood. Design of 50MM Powder to Air to Light Gas Gun Converter. Fort Belvoir, VA: Defense Technical Information Center, Juni 2008. http://dx.doi.org/10.21236/ada484804.

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5

Akin, M., R. Chau, Z. Jenei, M. Lipp und W. Evans. Handling and characterization of glow-discharge polymer samples for the light gas gun. Office of Scientific and Technical Information (OSTI), September 2013. http://dx.doi.org/10.2172/1104519.

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6

Susoeff, A., R. Hawke, P. Bowen, D. Greenwood und F. Marshall. Operating characteristics of a 7. 6 mm (0. 30 inch) diameter two-stage light-gas gun. Office of Scientific and Technical Information (OSTI), Juli 1992. http://dx.doi.org/10.2172/7047151.

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7

O'Connor, J. ,. Cradick, J. Evaluation of the LLNL Spectrometer for Possible use with the NSTec Optical Streak Camera as a Light Gas Gun Diagnostic. Office of Scientific and Technical Information (OSTI), September 2012. http://dx.doi.org/10.2172/1055481.

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8

Breiland, William George, William Dodd Reinhart, Paul Albert Miller, Justin L. Brown, Thornhill, Tom Finley, III (,, ), Michael A. Mangan et al. Advanced diagnostics for impact-flash spectroscopy on light-gas guns. Office of Scientific and Technical Information (OSTI), März 2007. http://dx.doi.org/10.2172/903428.

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9

Milora, S. L., S. K. Combs, M. J. Gouge und R. W. Kincaid. QUICKGUN: An algorithm for estimating the performance of two-stage light gas guns. Office of Scientific and Technical Information (OSTI), September 1990. http://dx.doi.org/10.2172/6428575.

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10

Vladimir Dmitriev. Ultra High p-doping Material Research for GaN Based Light Emitters. Office of Scientific and Technical Information (OSTI), Juni 2007. http://dx.doi.org/10.2172/966358.

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